Preethi Jain Preethi Jain - 6 months ago 9
Java Question

How to make it add it to the existing Array

I need to produce the JSON dynamically from a Map Data

I need to produce this below JSON

[
{
"name": "Chips & Chocolates",
"T2": [
{
"name": "Chips & Chocolates***Bummy Chips",
"T3": [
{
"name": "Chips & Chocolates***Bummy Chips***Masala Roasted with peanuts"
},
{
"name": "Chips & Chocolates***Bummy Chips***Nimbu filled"
}
]
}
]
}
]


But ending up creating the following JSON

[
{
"name": "Chips & Chocolates",
"T2": [
{
"name": "Chips & Chocolates***Bummy Chips",
"T3": [
{
"name": "Chips & Chocolates***Bummy Chips***Masala Roasted with peanuts"
}
]
},
{
"name": "Chips & Chocolates***Bummy Chips",
"T3": [
{
"name": "Chips & Chocolates***Bummy Chips***Nimbu filled"
}
]
}
]
}
]


This is my complete program

import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class Test {

private static JSONObject processString(String data, int level,String key) throws JSONException {
JSONObject json = new JSONObject();
int index = data.indexOf(',');
String name = data;
String value = "";
String remainder = "";
if (index < 0) {
index = name.indexOf('(');
if (index > 0) {
name = data.substring(0, index);
}
} else {
name = data.substring(0, index);
remainder = data.substring(name.length() + 1);
}
String fullpath = key+"***"+name;

value = fullpath;
System.out.println(fullpath);

json.put("name", fullpath);


JSONArray jsonarray = new JSONArray();
if (remainder.length() > 0) {
jsonarray.put(processString(remainder, level + 1,fullpath));
if(!value.equals(fullpath))
{
json.put("T" + level, jsonarray);
}
}
return json;
}

private static JSONArray processList(List<String> list, int level,String key) throws JSONException {
JSONArray json = new JSONArray();
for (String data : list) {
json.put(processString(data, level,key));
}
return json;
}

private static JSONArray processMap(Map<String, List<String>> map, int level) throws JSONException {

JSONArray array =new JSONArray();
for (String key : map.keySet()) {
JSONObject json = new JSONObject();
json.put("name", key);


json.put("T" + level, processList(map.get(key), level + 1,key));


array.put(json);
}
return array;

}

public static void main(String args[]) {
Map<String, List<String>> consilatedMapMap = new LinkedHashMap<String, List<String>>();

List<String> values = new LinkedList<String>();
values.add("Bummy Chips,Masala Roasted with peanuts(49)");
values.add("Bummy Chips,Nimbu filled(50)");
consilatedMapMap.put("Chips & Chocolates", values);


try {
int level = 2;
JSONArray json = processMap(consilatedMapMap, level);
System.out.println(json);
} catch(JSONException x) {
x.printStackTrace();
System.exit(-1);
}
}
}


When i run it , the following gets displayed

Output of the above program

Chips & Chocolates***Bummy Chips
Chips & Chocolates***Bummy Chips***Masala Roasted with peanuts
Chips & Chocolates***Bummy Chips
Chips & Chocolates***Bummy Chips***Nimbu filled

[
{
"name": "Chips & Chocolates",
"T2": [
{
"name": "Chips & Chocolates***Bummy Chips",
"T3": [
{
"name": "Chips & Chocolates***Bummy Chips***Masala Roasted with peanuts"
}
]
},
{
"name": "Chips & Chocolates***Bummy Chips",
"T3": [
{
"name": "Chips & Chocolates***Bummy Chips***Nimbu filled"
}
]
}
]
}
]


I have tried by putting a condition as

if(!value.equals(fullpath))
{
json.put("T" + level, jsonarray);
}

Answer

I have tried with your data to get your required output by changing some code in function processString() in argument instead of passing single string I have passed whole list and process that list in that function as show in below code :

private static JSONObject processString(List<String> list, int level,String key) throws JSONException {
        JSONObject json = new JSONObject();
        JSONArray jsonarray = new JSONArray();
        String  value = "";
        String remainder = "";
        JSONObject obj = new JSONObject();
        for(String data : list)
        {
            String name = data;
            int index = data.indexOf(',');

            name = data.substring(0, index);
            remainder = data.substring(name.length() + 1);

            String fullpath = key+"***"+name;

            value = fullpath;
            System.out.println(fullpath);


            json.put("name", fullpath);

            remainder = data.substring(index+1);
            int lastindex = remainder.indexOf('(');
            if (lastindex > 0) {
                remainder = remainder.substring(0,lastindex);
            }
            String fullpathVal = key+"***"+remainder;

            obj.put("name", fullpathVal);
            jsonarray.put(obj);
            json.put("T" + level, jsonarray);
        }
        return json;
    }

This is based on your sample data and what you required in output.

May this help you.